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Repeat Table Redisplays the computed table, which rates the transformation
types.
Transformation Table
Reports the number of calibration points and provides information about
each transformation type.
Outcome of Fit
Reports the outcome of fit for each of the transformation types. If the outcome
of fit is not Success or Exact for any of the transformation types, the program
reports failure of the entire calibration process and ends the command. The
remaining entries in each column are blank unless Outcome of Fit is Success.
Exact Indicates the correct number of points for a valid transformation.
Success Indicates more than enough points. The program succeeded in fitting
a transformation to the data.
Impossible Indicates not enough points.
Failure Indicates enough points, but the program was unable to fit a
transformation to the points, usually because some points were colinear or
coincident.
Canceled Indicates that the fit process was canceled. This outcome occurs
only with the projective transformation.
RMS Error
Reports the RMS (root mean square) error, which measures how close the
program has come to finding a perfect fit. The goal is the smallest RMS error.
Standard Deviation
Reports the standard deviation of the residuals. If it is near zero, the residual
at each calibration point is about the same.
Largest Residual/At Point
Reports the point at which the mapping is least accurate. The residual is the
distance between where the point was mapped during transformation and
where it would be mapped if the fit were perfect. The distance is given in the
current linear units.
Second-Largest Residual/At Point
Reports the point at which the mapping is second-least accurate. The residual
is the distance between where the point was mapped during transformation
and where it would be mapped if the fit were perfect. The distance is given in
the current linear units.
1924 | Chapter 20 T Commands